Top Protection for Competition Diesels

Whether competing in sled pulls, drag races or dyno challenges, competitors using DOMINATOR® 20W-50 Competition Diesel Oil enjoy the confidence...

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AMSOIL Synthetic Diesel OilAMSOIL Synthetic Diesel OilAMSOIL DOMINATOR 20W-50 Competition Diesel OilAMSOIL DOMINATOR® 20W-50 Competition Diesel Oil
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by Joel Youngman
January 25, 2019
Whether competing in sled pulls, drag races or dyno challenges, competitors using DOMINATOR® 20W-50 Competition Diesel Oil enjoy the confidence and security that come with providing their diesel trucks maximum protection and performance. Racing and high-performance diesel engines are modified to deliver maximum horsepower and torque. Their powerful designs create shearing forces that can cause oils to lose viscosity, leaving bearings, pistons and other components vulnerable to wear and failure. DOMINATOR Competition Diesel Oil delivers 50% more film thickness* to withstand high cylinder pressures and protect against wear. It is heavily fortified with zinc and phosphorus anti-wear additives to provide additional protection against scuffing and wear in severe conditions.HTHS viscosity graph showing AMSOIL DOMINATOR Competition Diesel Oil delivers 50% more film thickness than the limit for SAE 15W-40
  • Competition-grade technology formulated specifically to deliver maximum power and protection in performance-modified diesel engines
  • Extra zinc and phosphorus for bulletproof wear protection
  • Fights oil breakdown under the extreme temperatures and pressures of competition, extending the lives of cylinders, rings, cranks, rods, turbochargers and bearings
  • High-viscosity formulation provides an extra level of protection, while offsetting the negative effects of fuel dilution
  • Delivers superior shear stability to withstand the intense stress and compression common to high-horsepower diesel trucks
  • May be used in any diesel engine calling for an API CK-4, CJ-4, CI-4+ or CH-4 diesel oil

*compared to the 3.5cP HTHS limit for SAE 15W-40

This article is part of our Diesel Oil and Maintenance guide. See every article in the guide.

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by Joel Youngman

Joel Youngman is Lead Technical Writer at AMSOIL and associate editor of AMSOIL Magazine. He develops and edits content covering lubricant technology, product testing, vehicle systems, maintenance practices and equipment applications. Youngman also coordinates magazine articles and Tech Talk columns, working with engineers, product specialists and Communications personnel to maintain technical accuracy, editorial consistency and clear customer communication.

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AMSOIL Synthetic Diesel OilAMSOIL Synthetic Diesel OilAMSOIL DOMINATOR 20W-50 Competition Diesel OilAMSOIL DOMINATOR® 20W-50 Competition Diesel Oil

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